The story is best known through the Brothers Grimm' rendition. The Grimm Brothers included it in their 1812 edition of Kinder- und Hausmärchen, but there is an older moralistic version in the Grimms’ handwritten Ölenberg Manuscript from 1810. Jack Zipes noted in 2016 that the Grimms greatly treasured this tale, considering it to be one of the "oldest and most beautiful in German-speaking regions. " It has been postulated that parts may extend back until at least Roman times; an aspect of the story is referred to in Petronius's Satyricon, in which the character Trimalchio remarks that, "qui fuit rana nunc est rex" ("The man who was once a frog is now a king. "). Other scholars, however, argue that this may actually be a jab at the emperor Nero, who was often mockingly compared to a frog.